𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Effect of high temperature in determination of the mathematical dead time and the constants of then-alkane retention time curve in gas chromatography

✍ Scribed by Didaoui, L. ;Touabet, A. ;Meklati, B. Y.

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
480 KB
Volume
19
Category
Article
ISSN
0935-6304

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In gas liquid chromatography, the column dead time and the constants of the n‐alkane retention time curve are calculated by the multiparametric least‐squares regression iterative method at high temperature between 180 and 270°C. The method was applied to two types of columns. The first group includes eight packed columns (seven OV polymethylphenylsiloxane and Apolane‐87), while the second includes five glass capillary columns (four methylsilicone with different film thicknesses and Apolane‐87). The calculated tM and b values were compared with those obtained by Guardino's, Grobler's, and Kaiser's methods. The influences of coating thickness and temperature thereon were investigated.

📜 SIMILAR VOLUMES

Mathematical dead time determination and
Mathematical dead time determination and calculation of the constants of then-alkane retention time curve on OV polymethyl phenylsilicone stationary phases in gas chromatography
✍ Touabet, A. ;Badjah Hadj Ahmed, A. Y. ;Maeck, M. ;Meklati, B. Y. 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 352 KB 👁 1 views

## Gas chromatography Theory Mathematical dead time Methylphenylsiloxane stationary phases Constants of the n-alkane retention time curve The column dead time and the constants of the n-alkane retention time curve in gas-liquid chromatography are calculated by the iterativemethodonseriesof OVwlyme

The effect of the temperature dependence
The effect of the temperature dependence of mobile phase viscosity on the retention time in series-coupled gas chromatographic columns
✍ Buys, T. S. ;Smuts, T. W. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 1 views

## Abstract A previously established model of a system of series‐coupled columns, incorporating the effects of temperature and mobile phase compressibility, is generalized to take the temperature dependence of the mobile phase viscosity coefficient into account. Expressions are reported for the lin

A study of the effects of temperature an
A study of the effects of temperature and pressure on the retention time in series-coupled columns under conditions of constant mass flow rate
✍ Buys, T. S. ;Smuts, T. W. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 351 KB 👁 2 views

## Abstract The technique of controlling chromatographic selectivity by the adjustment of column temperatures in systems of series‐coupled columns is investigated by means of a general model incorporating the effects of temperature and mobile phase compressibility. In a previous article the perform